COMPUTER SCIENCE AND ENGINEERING
SQL
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Relation
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Entity Field
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Tuple
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Attribute
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Detailed explanation-1: -A row, or record, is also known as a tuple. The columns in a table is a field and is also referred to as an attribute. You can also think of it this way: an attribute is used to define the record and a record contains a set of attributes.
Detailed explanation-2: -The relational data model represents a table of values (or data table). Each row of the table, therefore, represents a collection of related data values and hence typically corresponds to real world entity or relationship. Formally, a row is called a tuple.
Detailed explanation-3: -(1) In a relational database, a tuple is one record (one row). See record and relational database. (2) A set of values passed from one programming language to another application program or to a system program such as the operating system.
Detailed explanation-4: -What is a row? A row is a single group of related data within a table. Relational databases contain tables with rows and columns (also known as records and fields, respectively). Columns are vertical, and hold a list of values all from the same field. Rows are your horizontal elements in a table.
Detailed explanation-5: -A tuple, also known as a record or row, is a basic unit of data in a relational database management system (DBMS). A tuple represents a single instance of a relation, or table, in the database.